ERG-3SJ621 Equivalent & Substitute Parts Reference

Part Overview

The ERG-3SJ621 is a 620 Ohms ±5% 3W through-hole axial resistor manufactured by Panasonic Electronic Components. This metal oxide film resistor features flame-proof and safety characteristics, designed for applications requiring reliable power dissipation in the 3-watt range. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Active alternatives from Stackpole Electronics Inc provide direct functional equivalence while maintaining compliance with current regulatory standards.

Substiute Parts

ERG-3SJ621

Panasonic Electronic ComponentsIn Stock: 807ERG-3SJ621 Datasheet

Current PartRFQ

RSMF3JT620R

Stackpole Electronics IncIn Stock: 2689RSMF3JT620R Datasheet

UpgradeRFQ

RSF3JT620R

Stackpole Electronics IncIn Stock: 942RSF3JT620R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERG-3SJ621 is determined by the following critical parameters:

• Resistance value: 620 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 3W (exact match required)
• Composition: Metal Oxide Film (exact match required)
• Package: Axial through-hole (exact match required)
• Operating temperature range: -55°C to 235°C (minimum requirement)
• RoHS3 compliance (regulatory requirement)

Two active substitutes meet these criteria. The RSMF3JT620R represents an upgrade substitute with identical electrical specifications and improved temperature coefficient performance. The RSF3JT620R serves as a similar substitute with equivalent electrical performance but different physical dimensions and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The RSMF3JT620R is the primary substitute for the obsolete ERG-3SJ621. This upgrade substitute maintains identical physical dimensions (5.50mm x 15.00mm), electrical specifications, and operating temperature range while offering improved temperature coefficient performance (±200ppm/°C versus ±300ppm/°C). Both parts are ROHS3 compliant and actively manufactured by Stackpole Electronics Inc, ensuring long-term availability and supply chain stability.

The RSF3JT620R serves as an alternative substitute when Cut Tape packaging is unavailable or when Tape & Reel format is preferred for automated assembly. This part maintains all critical electrical parameters but features larger physical dimensions (6.00mm x 17.50mm). PCB layout verification is required when substituting with RSF3JT620R due to dimensional differences.

Both substitutes are suitable for direct replacement in applications where the ERG-3SJ621 was originally specified, provided that physical space constraints and packaging requirements are accommodated.

Frequently Asked Questions (FAQ)

Q: Can RSMF3JT620R directly replace ERG-3SJ621 without PCB modification?

A: Yes. The RSMF3JT620R maintains identical physical dimensions (5.50mm x 15.00mm) and electrical specifications as the ERG-3SJ621, enabling direct substitution without PCB layout changes.

Q: What is the difference between RSMF3JT620R and RSF3JT620R?

A: Both parts share identical electrical specifications (620 Ohms, ±5%, 3W, metal oxide film). The primary differences are physical dimensions (RSMF3JT: 5.50mm x 15.00mm; RSF3JT: 6.00mm x 17.50mm) and packaging format (RSMF3JT: Cut Tape; RSF3JT: Tape & Reel). The RSF3JT620R features flame retardant coating, while the RSMF3JT620R is flame proof.

Q: Are both substitutes RoHS compliant?

A: Yes. Both RSMF3JT620R and RSF3JT620R are ROHS3 compliant, meeting current regulatory requirements for electronic component manufacturing and distribution.

Q: Which substitute should be selected for new designs?

A: The RSMF3JT620R is recommended for new designs due to its active product status, improved temperature coefficient, and availability in Cut Tape packaging suitable for both manual and automated assembly processes.

Q: Can RSF3JT620R be used in applications with space constraints?

A: No. The RSF3JT620R is larger (6.00mm x 17.50mm) than the original ERG-3SJ621 (5.50mm x 15.00mm). PCB layout verification is required to confirm adequate clearance before substitution.